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// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_RENDERER_HOST_BUFFERED_RESOURCE_HANDLER_H_
#define CHROME_BROWSER_RENDERER_HOST_BUFFERED_RESOURCE_HANDLER_H_
#include <string>
#include "chrome/browser/renderer_host/resource_handler.h"
class ResourceDispatcherHost;
class URLRequest;
// Used to buffer a request until enough data has been received.
class BufferedResourceHandler : public ResourceHandler {
public:
BufferedResourceHandler(ResourceHandler* handler,
ResourceDispatcherHost* host,
URLRequest* request);
// ResourceHandler implementation:
bool OnUploadProgress(int request_id, uint64 position, uint64 size);
bool OnRequestRedirected(int request_id, const GURL& new_url);
bool OnResponseStarted(int request_id, ResourceResponse* response);
bool OnWillRead(int request_id, net::IOBuffer** buf, int* buf_size,
int min_size);
bool OnReadCompleted(int request_id, int* bytes_read);
bool OnResponseCompleted(int request_id,
const URLRequestStatus& status,
const std::string& security_info);
private:
// Returns true if we should delay OnResponseStarted forwarding.
bool DelayResponse();
// Returns true if there will be a need to parse the DocType of the document
// to determine the right way to handle it.
bool ShouldBuffer(const GURL& url, const std::string& mime_type);
// Returns true if there is enough information to process the DocType.
bool DidBufferEnough(int bytes_read);
// Returns true if we have to keep buffering data.
bool KeepBuffering(int bytes_read);
// Sends a pending OnResponseStarted notification. |in_complete| is true if
// this is invoked from |OnResponseCompleted|.
bool CompleteResponseStarted(int request_id, bool in_complete);
scoped_refptr<ResourceHandler> real_handler_;
scoped_refptr<ResourceResponse> response_;
ResourceDispatcherHost* host_;
URLRequest* request_;
scoped_refptr<net::IOBuffer> read_buffer_;
scoped_refptr<net::IOBuffer> my_buffer_;
int read_buffer_size_;
int bytes_read_;
bool sniff_content_;
bool should_buffer_;
bool buffering_;
bool finished_;
DISALLOW_COPY_AND_ASSIGN(BufferedResourceHandler);
};
#endif // CHROME_BROWSER_RENDERER_HOST_BUFFERED_RESOURCE_HANDLER_H_
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